 And the Nigerian embassy in Ukraine has asked citizens in the East European country to remain calm and take responsibility for their personal security and safety. The notice comes as Russian President Vladimir Putin announced a military operation in Ukraine with explosions head soon after across the country and its foreign minister wanting a full-scale invasion was underway. The embassy encourages Nigerian nationals who consider the situation as emotionally disturbing to temporarily relocate to anywhere considered safe by private arrangements and also ensure that they do the needful to validate their resident documents for ease of return to the country when desired.